Ahh... dealers
Your aftermarket CSC options are ZSpeed Heavy Duty CSC or Z1 CSC Elimination Kit (exterior slave cylinder mounted on the transmission). There are no aftermarket CMC options, unless you modify one yourself. There are a couple of guys who have posted threads about theirs, but luckily the CMC is not too expensive and much easier to replace than the CSC. Specialty Z also makes a rebuildable clutch kit that includes their own CSC, though I'm not sure if you get just the CSC if with will work with other kits including stock - you would have to ask them.